[lldb] Print stack trace when lldb-vscode crashes

Print LLVM's pretty stack trace when lldb-vscode crashes. Also removes
the unnecessary call to PrintStackTraceOnErrorSignal in lldb-server as
it's already part of InitLLVM.

Differential revision: https://reviews.llvm.org/D99535

Author: JDevlieghere

lldb/tools/lldb-server/lldb-server.cpp

@@ -50,8 +50,6 @@ static void terminate_debugger() { g_debugger_lifetime->Terminate(); }
 // main
 int main(int argc, char *argv[]) {
   llvm::InitLLVM IL(argc, argv, /*InstallPipeSignalExitHandler=*/false);
-  llvm::StringRef ToolName = argv[0];
-  llvm::sys::PrintStackTraceOnErrorSignal(ToolName);
   llvm::PrettyStackTraceProgram X(argc, argv);
 
   int option_error = 0;

lldb/tools/lldb-vscode/lldb-vscode.cpp

@@ -49,7 +49,9 @@
 #include "llvm/Option/Option.h"
 #include "llvm/Support/Errno.h"
 #include "llvm/Support/FileSystem.h"
+#include "llvm/Support/InitLLVM.h"
 #include "llvm/Support/Path.h"
+#include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/raw_ostream.h"
 
 #include "JSONUtils.h"
@@ -3078,6 +3080,9 @@ void LaunchRunInTerminalTarget(llvm::opt::Arg &target_arg,
 }
 
 int main(int argc, char *argv[]) {
+  llvm::InitLLVM IL(argc, argv, /*InstallPipeSignalExitHandler=*/false);
+  llvm::PrettyStackTraceProgram X(argc, argv);
+
   llvm::SmallString<256> program_path(argv[0]);
   llvm::sys::fs::make_absolute(program_path);
   g_vsc.debug_adaptor_path = program_path.str().str();